Razor-stropping machine.



M. L. BRANDT. RAZOR STROPPING MACHINE. APPLICATION FILED SEPT. 28, 1910.

Patented May 7, 1912.

Ill/ll MAURICE L. BRANDT, OF BROOKLYN, NEW YORK,

RAZOR-STROPPING MACHINE.

Specification of Letters Patent. Application filed September 28', 1910.

Serial No. 5%,193.

To all whom it may concern Be it known that I, MAURICE L. BRANDT, a citizen of the United States, and a resident of Brooklyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in Razor- Stropping' Machines, of which the following is a specification.

The invention relates to improvements in razor st-ropping machines of the class comprising a frame through which a strop is threaded and is to be alternately pulled at its ends, and a blade holder located between the reaches of the strop and adapted to alternately carry the blade thereto as said reaches are alternately pulled outwardly, the blade moving to one reach as it is pulled outwardly and to the other reach when it is pulled outwardly, and said invention consists in the novel features hereinafter described, and particularly pointed out in the claim.

One object of the invention is to provide novel mechanism for automatically moving the blade from the strop when the pulling strain is relieved therefrom and to auto. matically retain the blade holder in a cen tral initial position ready to receive or release a blade.

A further object of the invention is to provide a. razor stropping machine composed of but few parts and very durable.

The invention will be fully understood from the detailed description hereinafter presented, reference being had to the accompanying drawings, in which:

Figure 1 is a vertical transverse section through a razor stropping machine constructed in accordance with and eml'iodying the invention, a portion of the razor strop being broken away; Fig. 2 isa central vertical longitudinal section throu h the same taken on the dotted line 2+2 of Fig. 1; and Fig. 3 is a detached bottom view, partly broken away. of a pivotally mounted actuating frame over which the strop drawn and which imparts movement to the blade holder.

In the drawings I illustrate the main frame of the machine as comprising ends 10 and a top connecting bar 11 in one integral piece of sheet metal, said ends 10 being connected by rods 12, 13 and 34., and the rods 12 being suitably near the upper end of said frame and the rods 13, 14 at the lower end thereof. Upon the rods 13 I I, l l l I provide rotary sleeves 13 as usual in this art. The upper transverse bar 11 of the frame has slit. and stamped up from its central portion a loop 16 to receive a strap or the like 17 by which the stropping machine may be suspended from a hook or other support. The exterior frame of the machine comprising the endslO, top bar 11 and loop 16 is in one integral piece.

Between the upper portions of the ends 10 pivotally mounted a hollow rockable frame 18 and a blade holder 19, each being of sheet racial and said frame having a convex or curved uppersurfnce, as shown in Fig. 1, and depending inwardly converging correspoinling sides 20. The frame 18 is pivotally secured to the ends 10 of the main frame by rivets or pins 9 which ex tend through the ends of said frame 18 and also through suitable openings formed in the ends 10 of the main frame and operate as trunnions. The frame 18 houses two spring.@ 21, 22 which are riveted to the frame and extend toward each other from the ends thereof. The inner ends of the springs 21, are reasonably near together at about the center of the frame 18 and present corresponding inwardly and downwardly converging fingers 23,24, which in the normal condition of the parts cross the plane of each other at their lower extremities, as shown in Fig. l. The springs 21, 22 are plate springs and of durable character.

The blade holder 19 is n-etorably formed from a plate of sheet. metal folded upon itself to form an upper member 25, a tubular intt-irmediate member 26 and a lower rereiving member comprising corresponding inwardly and downwardly converglng jaws 27 adapted to receive between them a razor blade The upper member 25 of the blade holder represents a plain flat bar extending upwardly within the frame 18 and formed with a slot 10 into which the lower ouds of the fingers 53, 24 of the springs 21, 22 project. Tho upper portion of the member 25 is concealed within the frame 18 and by reason of the slot. 330 a portion of said member 25 is above the lower ends of the springtingers 23, 2t and hold by initial condition of the machine, in a central position, whereby the entire blade holder may have a normal central position within the machine frame and between the reaches of the razor strep 31. The tubular member 26 of the blade holder is provided to inclose Patented lliay 7, 1912.

said fingers, in the the shaft 32 extending between the ends 10 of the main frame and affording means for pivotally mounting the blade holder between said ends. Below the tubular member 26 5 are the downwardly and inwardly converging jaws 27 which form a receiver or holder for the razor is provided a cushioning spring 33 of customary character for yieldingly pressing the blade into the narrower portion of the blade holder so that the same may be firmly held between the jaws 27 with a proper projection of the edge of the blade'below said jaws. The spring 33 enables blades varying in proportions to be received by the jaws 27.

The strop 31 is folded at its middle portion over the frame 18 and its reaches extend between the rollers 13, 14, as shown in Fig. 1. In the employment of the machine, a blade having been introduced between the jaws 27, the reaches of the strop are alternately pulled, in a manner well-known in this art, and as the strop slides under pressure over the frame 18 it turns the latter in the direction of the pull on the strop, said frame 18 turning in one direct-ion when one reach of the strop is pulled and immediately turning in the opposite direction when the other reach of the strop is pulled. In this manner the frame 18 is caused to rock back and forth on its pivots 9 and during its movement it imparts through the springfingers 23, 24 a simultaneous movement to the blade holder frame, causing the latter to have a rocking movement between the 'reaches of the strop 31.v When the frame 18 8 is turned downwardly and to the right, look- 40 ,l,ower portion of the strop,

ing at Fig. 1,

it Wlll act through the finger .24 to turn the blade holding frame 19, at its toward the right, thereby causing the edg eof the blade to be engaged the reach of the strop then being pulled gutwardly, and when the frame 18 is turned ,to the left by a pull on the left hand reach l its finger 23 will act to rexersely rock the blade holder 19 and cause ,fat to carry the raZ'or blade toward the left 6 against the left hand reach of the strop Alien being pulled outwardly. When the blade, and within this receiver stropping of a razor has ceased, the springs 23, 24 acting against the upper member 25 (above the slot 30) of the blade holder frame 19, restore said holder to its central position and likewise return the frame 18 to its normal position, said springs being under tension when out of their normal position.

The more important features of my in vention reside in the frame 18, blade holder frame 19 and cooperating parts and one result accomplished by these features is the avoidance of cutting the strop by means of the blade. Under the construction presented by me, the blade is efliciently held against the reach of the strop being pulled outwardly and is instantly moved from the strop when the pull thereon has ceased. When the blade-holder frame 19 is actuated from the frame 18, it is started in movement by one or the other of the spring fingers 23, 24 and finally acted upon by the edge of one side of the said frame 18, said edge uniformly engaging the entire length of the member 25 of the frame 19 and acting to evenly press the full length of the blade against the strop.

What I claim as my invention and desire to secure by Letters Patent, is:

A stropping machine comprising a pivotally mounted upper frame, a strop folded over and adapted when pulled at either end to actuate said frame, a pivotally mounted blade-llolder having an upper member be tween the sides of said frame and a lower member comprising blade-holding aws, and springs secured within said frame and having downwardly converging fingers engaging'opposite sides of said upper member of the blade-holder, said upper member being slotted to receive the lower extremities of said fingers; substantially as set forth.

Signed at New York city, in the county of New York and State of New York, this 26th day of September A. D. 1910.

CHAS. C. GILL. 

